Surf Forecasts:
Jaconé surf forecast from 31 Aug 2026:
- Best quality surf: Thursday 3 Sep, 3AM (local time) - 5ft (1.6m), 10s period, S swell with offshore winds.
- Most powerful swell: Thursday 3 Sep, 12PM (local time) - 6ft (1.8m), 11s period, SSE swell with 731 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 3PM (local time) - 1.5ft (0.4m), 8s period with ESE swell.
Best Forecast Surf Conditions for Jaconé this week:
The surf forecast for Jaconé over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 3PM. The primary swell is predicted to be 0.4m and 8s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Jaconé in the next 16 days are 1.8m 11s and forecast to arrive on Thursday (Sep 03) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Thursday (Sep 03) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 31st Aug) | 1.5ft (0.4m) 8s |
| Best Surf | 3AM (Thu 3rd Sep) | 5ft (1.6m) 10s |
| Most Powerful | 12PM (Thu 3rd Sep) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Jaconé over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cooking at Jaconé.
The opening week is a bit of a dud. You’re looking at a stretch from Monday the 31st of August all the way through to Wednesday the 2nd of September with weak, small waves and messy winds. We’ve got a few knee-high slop sessions with easterly swell around 2ft, but the wind’s all over the place and the combined energy is barely tickling 54 (weak). Not worth paddling for. The water temp is 72°, which is a touch warmer than average for this time of year, so the water’s not bad for a quick dip, but the surf is not happening.
Thursday the 3rd of September is where it starts to feel alive. A solid south swell builds to 6ft with an 11-second period, and the combined energy jumps to 693 (moderate energy). The morning sees clean offshore wind from the NE. Jaconé is an exposed spot and this S swell with that period will have some push. That Thursday morning is the first true standout – looks like a proper session. Thursday afternoon stays clean but the wind swings cross-off and the size drops slightly to 5ft.
Friday the 4th of September keeps the run going. Morning has a SSE swell at 4ft, still with a solid 11-second period, combined energy at 502 (moderate energy), and glassy cross-off wind from the NNE. Clean, fun waves. The afternoon drops off a bit to 4ft easterly wind swell, still clean but less punch.
Saturday the 5th and Sunday the 6th of September are back to small, weaker surf. S swell around 2ft to 3ft, combined energy falling into double digits again (122, 116). A light rain risk on Sunday, but the morning glass-off might give you a clean little ankle-snapper.
Now, the real standout later on is Thursday the 10th of September. We’ve got a south swell pushing 6ft with a very long 13-second period and combined energy of 1681 (strong energy). That morning has fresh offshore wind from the ENE – that’s a serious combo for Jaconé. Clean, lined-up waves, plenty of power. This is the best on offer in the whole outlook. A long-period S swell like that works a treat at a point or reef break, but for a beach setup like Jaconé, it’ll hold up, run straight, and wind will be firing. Just be aware this is nine days out, so keep an eye on it.
The week after that, the 11th to 15th, is mixed. The 11th of September has some clean, fun ESE swell at 4ft with glassy conditions in the afternoon (combined energy 455, moderate). The 13th has a clean glassy morning but the swell is short-period and weak. From the 14th onwards it’s mostly small and onshore again.
Best bet: Thursday the 3rd of September morning and especially Thursday the 10th of September morning. The latter is the heavy hitter: 6ft Southerly groundswell, 13 seconds, offshore breeze. That’s the one you wait for.
Rusty.
Short Range ForecastHeavy rain (total 35mm), heaviest during Tue night. Warm (max 24°C on Tue morning, min 18°C on Wed night). Winds decreasing (fresh winds from the WSW on Tue morning, light winds from the SE by Wed night). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sat afternoon. Warm (max 26°C on Fri morning, min 17°C on Thu night). Winds decreasing (fresh winds from the E on Thu afternoon, calm by Fri night). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | SW 6 | SSW 6 | S 9 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 6 | SE 5 | SSW 14 | SSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 28 | 23 | 64 | 142 | 99 | 55 | 132 | 136 | 334 | 698 | 561 | 447 | 270 | 167 | 90 | 56 | 38 | 65 | 30 | 61 | 91 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-on | on | cross-on | on | on | cross | off | cross-off | off | off | cross-off | cross-on | glassy | cross | cross | off | cross | glassy |
High Tide | 4:19PM0.94m | 4:31AM1.03m | 4:47PM0.87m | 5:17AM0.96m | 5:19PM0.80m | 6:17AM0.87m | 5:57PM0.73m | 9:34AM0.80m | 6:52PM0.67m | 11:33AM0.87m | 10:37PM0.65m | 12:30PM0.95m | 11:48PM0.74m | ||||||||
Low Tide | 10:48AM0.10m | 10:58PM0.20m | 11:34AM0.21m | 11:43PM0.23m | 12:29PM0.33m | 00:38AM0.25m | 1:38PM0.43m | 1:49AM0.27m | 3:04PM0.50m | 3:12AM0.26m | 4:32PM0.51m | 4:32AM0.19m | 5:40PM0.47m | ||||||||
 |  |  |  | |  | | |  | | | | |  |  |  | |  | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:40 | — | — | 5:40 | — |
mm | 1 | — | — | — | 1 | 27 | 3 | 3 | — | — | — | — | — | — | 1 | 1 | 4 | 7 | 1 | 2 | 11 |
Temp °C | 23 | 23 | 22 | 24 | 22 | 21 | 20 | 20 | 19 | 22 | 22 | 18 | 26 | 26 | 23 | 23 | 24 | 21 | 21 | 21 | 20 |
Feels °C | 26 | 24 | 23 | 22 | 23 | 23 | 17 | 17 | 19 | 19 | 18 | 14 | 27 | 26 | 26 | 22 | 25 | 23 | 23 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 8 | E 9 | S 9 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | E 8 | E 8 | E 8 | SSE 6 | SE 5 | SSW 8 | SSW 7 |
| kJ | 28 | 18 | 64 | 142 | 99 | 55 | 35 | 23 | 334 | 698 | 561 | 447 | 270 | 167 | 82 | 51 | 35 | 65 | 30 | 22 | 91 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 8 | SW 6 | SSW 8 | WSW 4 | SSE 7 | SSE 9 | SE 9 | E 9 | E 9 | SSE 12 | E 9 | E 7 | E 8 | SSE 10 | SSE 10 | SSE 10 | E 8 | SW 5 | SSW 14 | ESE 7 |
| kJ | 22 | 23 | 5 | 22 | 16 | 10 | 9 | 3 | 24 | 24 | 220 | 15 | 56 | 55 | 90 | 56 | 38 | 22 | 13 | 61 | 52 |
Swell 3 Height (m) Direction Period (s) | SW 4 | SW 6 | S 7 | — | S 8 | SSE 10 | — | — | SE 9 | — | — | — | S 12 | S 11 | SSW 10 | SSW 3 | S 9 | SSE 9 | E 8 | SW 5 | S 12 |
| kJ | 4 | 9 | 4 | — | 19 | 10 | — | — | 3 | — | — | — | 3 | 9 | 10 | 4 | 2 | 17 | 21 | 7 | 77 |
Wind waves Height (m) Direction Period (s) | — | — | E 8 | — | WSW 4 | SW 5 | SW 6 | SSW 6 | — | — | E 4 | ENE 5 | ENE 7 | E 7 | — | — | SSE 5 | — | ESE 6 | SE 6 | — |
| kJ | — | — | 29 | — | 20 | 42 | 132 | 136 | — | — | 35 | 81 | 241 | 159 | — | — | 19 | — | 12 | 29 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 64 | 62 | 58 | 64 | 247 | 766 | 0 | 0 | 216 | 0 | 0 | 0 | 93 | 0 | 0 | 25 | 0 | 77 | 0 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Jaconé Surf forecast
The above surf forecast table for Jaconé provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaconé can be found by selecting the local surf guide option on the grey menu. Our Jaconé surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Jaconé) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Jaconé may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Jacone is 14 km (9 miles) from the city of Saquarema. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Saquarema. Saquarema has rooms for a wide range of budgets as well as car hire and transport links.
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